26
V. Instrument Maintenance
To keep the instrument work in good condition, constant maintain is needed.
1. Daily Maintain
(1) Check the Room
After measurement, the cuvettes with sample solutions should be taken out of the compartment in
time. Or the volatilization of the solution would make the mirror go moldy. Users must pay more
attention to the corrosive sample and liquid easy to volatilize. Any solution remains in the
compartment should be wipe off immediately.
(2) Surface Clean
The cover of the instrument is with paint. Please use wet towel to wipe off the drips on the surface
immediately. Organic solution is forbidden to be used to cleanthe cover. Please wipe off the dirt on
the cover timely.
(3) Clean the Cuvettes
After every test or after a solution change, the cuvettes should be cleaned carefully, or the remains on
the surface would cause measuring error.
2. Troubleshooting
(1) Dark Current Error when Self-check
Possible Cause
Solution
Open the lid of the compartment
Close the lid of the compartment
during the course of self-test.
and switch on the power again.
(2) No Response After Power On
Possible Cause
Solution
Bad contact in power supply
Improve the contact
Fuse melt
Replace a new fuse
(3) Printer Not Work, Printer Error
Possible Cause
Solution
No power supply
Switch on the power supply
Bad contact in power supply
Improve the contact
Bad contact of the data cable
Improve the contact
(4) No Stable Reading
Possible Cause
Solution
No enough pre-warm
Increase the pre-warm time
Glass cuvettes used in UV Range
Use Silicon Cuvettes.
No stable Sample
Improve the sample
Much higher sample concentration
Dilute the sample
Low voltage or unstable power supply Improve the power condition
Lights defect
Replace a new lamp
Light used up
Replace a new lamp
(5) Worse Repeatability
Possible Reason
Solution
Unstable sample
Improve the sample